It has the typical listeroid circulating pump and doesn't appear to have a thermostat. Just a passive radiator but doubt this ever got up to temperature. Planning on changing the radiator out to a fan driven unit on the other side of the wall in the shop to heat in the winter. Have spare 3 KW ST head for it planning on installing after I inspect the engine for issues and change fluids.
Luckily, My wife doesn't have any vices like purses and shoes, just take her out to dinner once in a while and she's happy.